Healthy soil is precious
Soil – also known as topsoil, earth, muck, mud, dirt… Whatever you call the top layer of soil in your garden, did you know that it takes around 2000 years to form 100mm of it? Healthy soil is one of the most precious elements we have on earth; it is essential to our social, economic and environmental stability. Without healthy soil we wouldn’t be able grow crops and we just wouldn’t survive – so why do we humans not look after it? Could it be that we don’t understand it’s importance, or how to work with it/look after it or that we just don’t care? Whatever the reason, the fact is, our soil is degrading at an alarming rate, and we need to respect it and look after what we have whether we are working with it as a homeowner or as a professional, before it’s too late.
Soil can be so easily damaged by, for instance, natural erosion due to strong winds, rain washing nutrients away or flooding; also pollutants; lack of ground cover and installing too high a proportion of hard landscaping in a garden; having lots of paving with non-permeable jointing, and more. Using cement or artificial lawns and plants all have a devastating effect on the health of our soil (more on artificial lawns later).
In many cases, soil is stripped and sent away to a recycling centre and manufactured topsoil is then brought back in to create borders. Historically, the majority of manufactured topsoil has been, and still is, created to suit golf industry requirements. This topsoil includes high levels of sand, which does a great job on golf courses where it gets regular irrigation and fertilisers. However, studies have shown that these soils aren’t suitable for onward growth of trees, and in terms of the average garden will often mean that plants and crops are unlikely to thrive well either. Manufactured soils are just that: manufactured i.e. they aren’t naturally occurring and are likely to have little to no soil life in them; in short, they are not a good substitute for proper, healthy soil.
Help soil help itself
As garden designers it is our job to conserve as much top soil as we can in a garden. It’s not only better for the environment, but it is the most cost-effective solution too so it makes sense that healthy soil should never be sent away to a recycling facility. The condition of existing soil almost doesn’t matter either; if we can give nature the right type of help it is likely that it will begin to heal itself and improve its own health. For example, if soil is waterlogged that can mean both the topsoil and the subsoil underneath are compacted. Break up that compaction and studies have shown that the ensuing movement of water and nutrients aids soil recovery and promotes soil life.
Micro-organisms, earthworms and many insects naturally live in our soils and are essential for its cultivation and for keeping it a healthy medium for growing crops, trees and plants. We can, of course, help this along by mulching our soils once or twice a year with good organic material. The soil life will begin to process it and that will help improve the structure of the soil thereby allowing and maximising the uptake of nutrients by plants. In a nutshell then healthy soil equals healthy plants.
One final note about artificial lawns – this is a product that can have a devastating effect on the micro-organisms and insects in the soil beneath (e.g., earthworms can suffocate) and the birds and insects above – not to mention the plastic particulates that transfer into the ground. We have committed to never specifying or using any artificial lawns (or plants) in any of our designs and we hope that talking about the importance of soil health will help convince you to never use artificial grass in any situation. It might not look it but a real lawn has a huge ecosystem living under, on and above it. So, please, do what you can to respect and look after your own bit of topsoil; nurture it, don’t smother it or compact it and never let anyone take it away!
